Sökning: "Radars"

Visar resultat 1 - 5 av 49 avhandlingar innehållade ordet Radars.

  1. 1. Millimetre wave waveguide enclosed grid frequency multipliers and imaging

    Författare :Robin Dahlbäck; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Millimeter wave; THz imaging; THz sources; Grid; Heterostructure Barrier Var- actors HBVs ; Varactors; Array; FMCW; 2D-grid; Quasi-optical.; Frequency multipliers; Radars; sub-millimetre waves; Schottky diodes;

    Sammanfattning : The utilisation of the THz spectrum ( 0.3-10 THz ) is hampered by fundamental difficulties in generating power at these frequencies. LÄS MER

  3. 2. Interference Mitigation Techniques in FMCW Automotive Radars

    Författare :Muhammad Rameez; Mats Pettersson; Gary Smith-Jonforsen; Blekinge Tekniska Högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Radar has emerged as an important sensor for scenario perception in automated driving and surveillance systems. The exponential increase of radar units in traffic and their operating frequency limitations have given rise to the problem of mutual interference. LÄS MER

  4. 3. Microwave Power Devices and Amplifiers for Radars and Communication Systems

    Författare :Sher Azam; Qamar ul Wahab; Erik Janzén; Georg Boeck; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Semiconductor physics; Halvledarfysik;

    Sammanfattning : SiC MESFETs and GaN HEMTs posses an enormous potential in power amplifiers at microwave frequencies due to their wide bandgap features of high electric field strength, high electron saturation velocity and high operating temperature. The high power density combined with the comparably high impedance attainable by these devices also offers new possibilities for wideband power microwave systems. LÄS MER

  5. 4. Interferometric 3D-shape and deformation measurements using ultra short pulses

    Författare :Bengt Nilsson; KTH; []
    Nyckelord :Measurements; Ultra short pulses; Deformation measurements; Coherences; Speckle; Holographies; Holographic; Coherence radars;

    Sammanfattning : .... LÄS MER

  7. 5. Decision making in airborne surveillance radars employing an electronically scanned antenna

    Författare :Johannes Wintenby; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; radar control; surveillance radar; sensor management; track initiation; resource allocation; decision-making; abstraction and modularization; electronically scanned antenna;

    Sammanfattning : .... LÄS MER